Antenna



FIG. 1 is a front elevational view of a first embodiment of an antenna showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side view thereof, the left side view being a mirror image thereof;

FIG. 5 is a front, right, bottom perspective view thereof;

FIG. 6 is a front, right, top perspective view thereof; and,

FIG. 7 is a rear, top, right perspective view thereof. 

CLAIM The ornamental design for an antenna, as shown and described. 